Development of sulfonate-functionalized hydroxyapatite nanoparticles for cadmium removal from aqueous solutions
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Authors
Oulguidoum, Abdeladim
Bouyarmane, Habiba
Laghzizil, Abdelaziz
Nunzi, Jean-Michel
Saoiabi, Ahmed
Date
2019-05-01
Type
journal article
Language
en
Keyword
Functionalization , Hydroxyapatite , Organosulfonate , Nanocomposites , Adsorption
Alternative Title
Abstract
Sulfonate-functionalized hydroxyapatite was successfully synthesized by organo- functionalization using natural phosphate and Benzenedisulfonate molecules. The modified apatites were characterized using multiple techniques, evidencing the effective incorporation of organo-functional groups into the hydroxyapatite matrix. Sulfonated mesoporous hydroxyapatite possesses a large amount of accessible -SO3 acid groups, which may be versatile adsorbents for the binding of Cd(II) cations. Stability issues of the sulfonated HAp nanocomposites for the specific reactions are addressed. The sulfonated hydroxyapatite nanopowders were evaluated cadmium removal from water. Adsorption tests reveal the efficiency of the hybrid apatites for cadmium removal (qm = 457 mg g-1). Experimental results fit the Ho-second-order kinetic model for chemical adsorption. Two possible adsorption controlled mechanisms of Cd(II) ions at the apatite surface, complexation and dissolution/precipitation, are proposed.
Description
Citation
Oulguidoum, A.; Bouyarmane, H.; Laghzizil, A.; Nunzi, J.-M.; Saoiabi, A. Development of Sulfonate-Functionalized Hydroxyapatite Nanoparticles for Cadmium Removal from Aqueous Solutions. Colloid and interface science communications 2019, 30, 100178–. https://doi.org/10.1016/j.colcom.2019.100178.
Publisher
Elsevier